The U33 replaces 15 pairs of dumbbells in the space of 1 pair. The U33 has a weight range of 1-21 lbs per hand and offers these increments: 1, 3, 4, 5, 7, 8, 9, 11, 12, 13, 15, 16, 17, 19, 20 and 21 lbs per hand.
Expandable to 33lbs per hand with the U33 Stage II Kit. (adds the equivalent of 9 more dumbbells).












